Tongue shield for use in discourging fingernail biting



FIG. 1 is a top plan view of a tongue shield for use in discouraging fingernail biting showing my new design, the bottom being substantially similar in appearance;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a left side elevational view thereof, the right side being a mirror image. 

The ornamental design for a tongue shield for use in discouraging fingernail biting, substantially as shown and described. 